CVE-2026-99087 is a vulnerability in Linux Kernel
Published on October 23, 2026
dm-integrity: fix NULL pointer dereference when the 'R' flag is used
In the Linux kernel, the following vulnerability has been resolved:
dm-integrity: fix NULL pointer dereference when the 'R' flag is used
If the dm-integrity device has the SB_FLAG_DIRTY_BITMAP flag set and the
user activates the device in the 'R' mode, a crash in dm_integrity_resume
happens because the function attempts to read the journal containing the
bitmap.
This patch makes dm-integrity skip any writes to the device in
dm_integrity_resume if the device is activated in the 'R' mode.
Products Associated with CVE-2026-99087
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Affected Versions
Linux:- Version 468dfca38b1a6fbdccd195d875599cb7c8875cd9 and below 2e25842f0e4423e0efb243f56153d842ed6b933f is affected.
- Version 468dfca38b1a6fbdccd195d875599cb7c8875cd9 and below 69ed43ed8a174465fca1ba6bfbde53e4618c8956 is affected.
- Version 468dfca38b1a6fbdccd195d875599cb7c8875cd9 and below 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84 is affected.
- Version 5.2 is affected.
- Before 5.2 is unaffected.
- Version 6.18.58, <= 6.18.* is unaffected.
- Version 7.2.12, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.